CVE-2019-19781 – Vulnerability in Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP appliance

A vulnerability has been identified in Citrix Application Delivery Controller (ADC) formerly known as NetScaler ADC and Citrix Gateway formerly known as NetScaler Gateway that, if exploited, could allow an unauthenticated attacker to perform arbitrary code execution.

The scope of this vulnerability includes Citrix ADC and Citrix Gateway Virtual Appliances (VPX) hosted on any of Citrix Hypervisor (formerly XenServer), ESX, Hyper-V, KVM, Azure, AWS, GCP or on a Citrix ADC Service Delivery Appliance (SDX).

Further investigation by Citrix has shown that this issue also affects certain deployments of Citrix SD-WAN, specifically Citrix SD-WAN WANOP edition. Citrix SD-WAN WANOP edition packages Citrix ADC as a load balancer thus resulting in the affected status.

The vulnerability has been assigned the following CVE number:

• CVE-2019-19781 : Vulnerability in Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance leading to arbitrary code execution

The vulnerability affects the following supported product versions on all supported platforms:

• Citrix ADC and Citrix Gateway version 13.0 all supported builds before 13.0.47.24

• NetScaler ADC and NetScaler Gateway version 12.1 all supported builds before 12.1.55.18

• NetScaler ADC and NetScaler Gateway version 12.0 all supported builds before 12.0.63.13

• NetScaler ADC and NetScaler Gateway version 11.1 all supported builds before 11.1.63.15

• NetScaler ADC and NetScaler Gateway version 10.5 all supported builds before 10.5.70.12

• Citrix SD-WAN WANOP appliance models 4000-WO, 4100-WO, 5000-WO, and 5100-WO all supported software release builds before 10.2.6b and 11.0.3b

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